WO2023043062A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2023043062A1
WO2023043062A1 PCT/KR2022/011849 KR2022011849W WO2023043062A1 WO 2023043062 A1 WO2023043062 A1 WO 2023043062A1 KR 2022011849 W KR2022011849 W KR 2022011849W WO 2023043062 A1 WO2023043062 A1 WO 2023043062A1
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WIPO (PCT)
Prior art keywords
layer
electrode
auxiliary wire
auxiliary
main sub
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PCT/KR2022/011849
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English (en)
Korean (ko)
Inventor
김재익
강태욱
송승용
이덕중
이준구
Original Assignee
삼성디스플레이주식회사
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Publication of WO2023043062A1 publication Critical patent/WO2023043062A1/fr

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80522—Cathodes combined with auxiliary electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks

Definitions

  • Embodiments of the present invention relate to display devices.
  • transistors are disposed in a display area to control luminance of light emitting diodes.
  • the transistors control the corresponding light emitting diode to emit light having a predetermined color using the transferred data signal, driving voltage, and common voltage.
  • One of the electrodes of the light emitting diode may receive a predetermined voltage through a transistor, and the other electrode may receive a voltage through an auxiliary wire.
  • the non-display area needs to be reduced as a dead space in which light emitting diodes are not disposed.
  • the space in which components disposed in the non-display area are to be located is narrowed, the quality of light emitted from the light emitting diodes may deteriorate.
  • An object of the present invention is to solve various problems including the above problems, and to provide a display device capable of displaying high-quality images while reducing the area of a dead space.
  • these tasks are illustrative, and the scope of the present invention is not limited thereby.
  • the auxiliary wiring on the substrate; an insulating layer disposed on the auxiliary wire, overlapping the auxiliary wire, and including a first opening having a width greater than that of the auxiliary wire; a first electrode on the insulating layer; a bank layer including a light emitting opening overlapping the first electrode; an intermediate layer overlapping the first electrode through the light emitting opening and including a light emitting layer; and a second electrode on the intermediate layer, wherein the auxiliary wire includes a plurality of sub-layers, and the second electrode connects to one of the plurality of sub-layers through the first opening of the insulating layer.
  • a display device in contact with a side surface.
  • the plurality of sub-layers of the auxiliary wiring may include a main sub-layer; an upper layer disposed on the main sub layer and having a tip protruding from a point where a side surface and an upper surface of the main sub layer meet; and a lower layer disposed below the main sub layer, and the second electrode may directly contact the side surface of the main sub layer.
  • a thickness of the main sub layer may be greater than at least one of a thickness of the upper layer and a thickness of the lower layer.
  • the intermediate layer may overlap the first electrode and the auxiliary wire, and a part of the intermediate layer may be located on the auxiliary wire while being separated from other parts of the intermediate layer around the auxiliary wire by the tip.
  • the second electrode overlaps the first electrode and the auxiliary wire, but a part of the second electrode may be located on the auxiliary wire while being separated from other parts of the intermediate layer around the auxiliary wire by the tip. there is.
  • the main sub layer is made of copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), It may include at least one selected from iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), and molybdenum (Mo).
  • At least one of the upper layer and the lower layer may include at least one selected from indium tin oxide (ITO), titanium (Ti), molybdenum (Mo), and tungsten (W).
  • ITO indium tin oxide
  • Ti titanium
  • Mo molybdenum
  • W tungsten
  • a lower insulating layer disposed below the auxiliary wire may be further included, and a portion of the intermediate layer may directly contact a portion of an upper surface of the lower insulating layer through the first opening of the insulating layer.
  • the auxiliary wire may include a plurality of protrusions protruding in a direction crossing the extending direction of the auxiliary wire.
  • a contact area between the second electrode and the side surface of the auxiliary wire may be continuous along a side surface of at least one of the plurality of protrusions of the auxiliary wire.
  • a substrate disposed in a display area and a non-display area around the display area; a common voltage supply line disposed in the non-display area; an auxiliary wire electrically connected to the common voltage supply line and disposed in the display area; an insulating layer disposed on the auxiliary wire, overlapping the auxiliary wire, and including a first opening having a width greater than that of the auxiliary wire; a first electrode on the insulating layer; a bank layer including a light emitting opening overlapping the first electrode; an intermediate layer overlapping the first electrode through the light emitting opening and including a light emitting layer; and a second electrode on the intermediate layer, wherein the auxiliary wire includes a plurality of sub-layers, and the second electrode connects to one of the plurality of sub-layers through the first opening of the insulating layer.
  • a display device in contact with a side surface.
  • the plurality of sub-layers of the auxiliary wiring may include a main sub-layer; an upper layer disposed on the main sub layer and having a tip protruding from a side surface of the main sub layer; and a lower layer disposed below the main sub layer, and the second electrode may directly contact the side surface of the main sub layer.
  • a thickness of the main sub layer may be greater than at least one of a thickness of the upper layer and a thickness of the lower layer.
  • the intermediate layer may overlap the first electrode and the auxiliary wire, and a part of the intermediate layer may be located on the auxiliary wire while being separated from other parts of the intermediate layer around the auxiliary wire by the tip.
  • the second electrode overlaps the first electrode and the auxiliary wire, but a part of the second electrode may be located on the auxiliary wire while being separated from other parts of the intermediate layer around the auxiliary wire by the tip. there is.
  • the main sub layer is made of copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), It may include at least one selected from iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), and molybdenum (Mo).
  • At least one of the upper layer and the lower layer may include at least one selected from indium tin oxide (ITO), titanium (Ti), molybdenum (Mo), and tungsten (W).
  • ITO indium tin oxide
  • Ti titanium
  • Mo molybdenum
  • W tungsten
  • a lower insulating layer disposed below the auxiliary wire may be further included, and a portion of the intermediate layer may directly contact a portion of an upper surface of the lower insulating layer through the first opening of the insulating layer.
  • the auxiliary wire may include a plurality of protrusions protruding in a direction crossing the extending direction of the auxiliary wire.
  • a contact area between the second electrode and the side surface of the auxiliary wire may be continuous along a side surface of at least one of the plurality of protrusions of the auxiliary wire.
  • FIG. 1 is a perspective view schematically illustrating a display device according to an exemplary embodiment of the present invention.
  • FIG. 2 is a cross-sectional view schematically illustrating each pixel of a display device according to an exemplary embodiment of the present invention.
  • FIG. 3 shows each optical part of the color conversion-transmitting layer of FIG. 2 .
  • FIG. 4 is an equivalent circuit diagram illustrating a light emitting diode included in a display device according to an exemplary embodiment and a pixel circuit electrically connected to the light emitting diode.
  • 5A is a plan view illustrating a common voltage supply line and a driving voltage supply line of a display device according to an exemplary embodiment of the present invention.
  • 5B and 5C are plan views illustrating a common voltage supply line of a display device according to another exemplary embodiment of the present invention.
  • FIG. 6 is a cross-sectional view showing a portion of a display device according to an exemplary embodiment of the present invention.
  • FIG. 7 is an enlarged cross-sectional view of portion VI of FIG. 6 .
  • 8A and 8B are cross-sectional views showing auxiliary wires according to another exemplary embodiment of the present invention.
  • FIG. 9A is a perspective view schematically illustrating an auxiliary wire and a first opening of a planarization insulating layer on the auxiliary wire according to an embodiment of the present invention.
  • FIG. 9B is a plan view schematically illustrating FIG. 9A.
  • FIG. 10A is a perspective view schematically illustrating an auxiliary wire and a first opening of a planarization insulating layer on the auxiliary wire according to another embodiment of the present invention
  • FIG. 10B is a plan view illustrating an auxiliary wire and a first opening of a planarization insulating layer according to another embodiment of the present invention, and is a plan view schematically illustrating FIG. 10A.
  • 10C is a plan view illustrating a first opening of an auxiliary wire and a planarization insulating layer according to another embodiment of the present invention.
  • 11A is a perspective view schematically illustrating an auxiliary wire and a first opening of a planarization insulating layer on the auxiliary wire according to another embodiment of the present invention.
  • 11B is a plan view illustrating a first opening of an auxiliary wire and a planarization insulating layer according to another embodiment of the present invention.
  • the x-axis, y-axis, and z-axis are not limited to the three axes of the Cartesian coordinate system, and may be interpreted in a broad sense including these.
  • the x-axis, y-axis, and z-axis may be orthogonal to each other, but may refer to different directions that are not orthogonal to each other.
  • FIG. 1 is a perspective view schematically illustrating a display device according to an exemplary embodiment of the present invention.
  • the display device DV may include a display area DA and a non-display area NDA outside the display area DA.
  • the display device DV may provide an image to the display area DA through an array of a plurality of pixels two-dimensionally arranged on the x-y plane.
  • the plurality of pixels include a first pixel, a second pixel, and a third pixel.
  • the first pixel is a red pixel (Pr)
  • the second pixel is a green pixel (Pg)
  • a case in which the pixel is a blue pixel Pb will be described.
  • the red pixel Pr, the green pixel Pg, and the blue pixel Pb are regions capable of emitting red, green, and blue light, respectively, and the display device DV uses the light emitted from the pixels. image can be provided.
  • the non-display area NDA is an area that does not provide an image and may entirely surround the display area DA.
  • a driver or main voltage line for providing electrical signals or power to the pixel circuits may be disposed in the non-display area NDA.
  • the non-display area NDA may include a pad that is an area to which an electronic device or a printed circuit board can be electrically connected.
  • the display area DA may have a polygonal shape including a quadrangle.
  • the display area DA may have a rectangular shape in which a horizontal length is greater than a vertical length, a rectangular shape in which a horizontal length is smaller than a vertical length, or a square shape.
  • the display area DA may have various shapes such as an ellipse or a circle.
  • FIG. 2 is a cross-sectional view schematically illustrating each pixel of a display device according to an exemplary embodiment of the present invention.
  • the display device DV may include a circuit layer 200 on a substrate 100 .
  • the circuit layer 200 includes first to third pixel circuits PC1 , PC2 , and PC3 , and each of the first to third pixel circuits PC1 , PC2 , and PC3 are first to third pixel circuits of the light emitting diode layer 300 . It may be electrically connected to the third light emitting diodes LED1 , LED2 , and LED3 .
  • the first to third light emitting diodes LED1 , LED2 , and LED3 may include organic light emitting diodes including organic materials.
  • the first to third light emitting diodes LED1 , LED2 , and LED3 may be inorganic light emitting diodes including inorganic materials.
  • the inorganic light emitting diode may include a PN junction diode including inorganic semiconductor-based materials. When a forward voltage is applied to the PN junction diode, holes and electrons are injected, and energy generated by recombination of the holes and electrons is converted into light energy to emit light of a predetermined color.
  • the aforementioned inorganic light emitting diode may have a width of several to hundreds of micrometers or several to several hundred nanometers.
  • the light emitting diode (LED) may be a light emitting diode comprising quantum dots.
  • the light emitting layer of the light emitting diode (LED) may include organic materials, inorganic materials, quantum dots, organic materials and quantum dots, or inorganic materials and quantum dots.
  • the first to third light emitting diodes LED1 , LED2 , and LED3 may emit light of the same color.
  • light eg, blue light Lb
  • light emitted from the first to third light emitting diodes LED1 , LED2 , and LED3 passes through the encapsulation layer 400 on the light emitting diode layer 300 and passes through the color conversion-transmitting layer 500 . can pass
  • the color conversion-transmitting layer 500 may include optical units that convert or transmit the color of light emitted from the light emitting diode layer 300 (eg, blue light Lb).
  • the color conversion-transmitting layer 500 includes color conversion units that convert light emitted from the light emitting diode layer 300 (eg, blue light Lb) into light of a different color, and light emitted from the light emitting diode layer 300. (eg, blue light Lb) may include a transmission unit that transmits without color conversion.
  • the color conversion-transmitting layer 500 includes a first color conversion unit 510 corresponding to a red pixel Pr, a second color conversion unit 520 corresponding to a green pixel Pg, and a blue pixel ( A transmission part 530 corresponding to Pb) may be included.
  • the first color conversion unit 510 may convert blue light Lb into red light Lr
  • the second color conversion unit 520 may convert blue light Lb into green light Lg.
  • the transmitting part 530 may pass the blue light Lb without converting it.
  • the color layer 600 may be disposed on the color conversion-transmitting layer 500 .
  • the color layer 600 may include first to third color filters 610, 620, and 630 of different colors.
  • the first color filter 610 may be a red color filter
  • the second color filter 620 may be a green color filter
  • the third color filter 630 may be a blue color filter.
  • Color purity may be improved while the color converted light and the transmitted light in the color conversion-transmitting layer 500 pass through the first to third color filters 610, 620, and 630, respectively.
  • the color layer 600 may prevent or minimize external light (eg, light incident from the outside of the display device DV toward the display device DV) from being reflected and recognized by the user.
  • a light-transmitting substrate layer 700 may be included on the color layer 600 .
  • the light-transmitting substrate layer 700 may include glass or a light-transmitting organic material.
  • the light-transmitting substrate layer 700 may include a light-transmitting organic material such as an acrylic resin.
  • the light-transmitting base layer 700 is a kind of substrate, and after the color layer 600 and the color conversion-transmitting layer 500 are formed on the light-transmitting base layer 700, the color conversion-transmitting layer 500 It may be integrated so as to face the encapsulation layer 400 .
  • the light-transmissive base layer 700 is directly applied and cured on the color layer 600.
  • another optical film such as an anti-reflection (AR) film, may be disposed on the light-transmitting substrate layer 700 .
  • AR anti-reflection
  • the display device DV having the above-described structure may include electronic devices capable of displaying moving images or still images, such as televisions, billboards, movie theater screens, monitors, tablet PCs, laptops, and the like.
  • FIG. 3 shows each optical part of the color conversion-transmitting layer of FIG. 2 .
  • the first color conversion unit 510 may convert incident blue light Lb into red light Lr.
  • the first color conversion unit 510 includes a first photosensitive polymer 1151, first quantum dots 1152 dispersed in the first photosensitive polymer 1151, and first scattering particles 1153. may include
  • the first quantum dots 1152 may be excited by the blue light Lb and isotropically emit red light Lr having a longer wavelength than the blue light.
  • the first photosensitive polymer 1151 may be an organic material having light transmission.
  • the first scattering particles 1153 scatter blue light Lb that is not absorbed by the first quantum dots 1152 so that more first quantum dots 1152 are excited, thereby increasing color conversion efficiency.
  • the first scattering particles 1153 may be, for example, titanium oxide (TiO2) or metal particles.
  • the first quantum dots 1152 may be selected from a group II-VI compound, a group III-V compound, a group IV-VI compound, a group IV element, a group IV compound, and a combination thereof.
  • the second color conversion unit 520 may convert incident blue light Lb into green light Lg. As shown in FIG. 3, the second color conversion unit 520 includes a second photosensitive polymer 1161, second quantum dots 1162 dispersed in the second photosensitive polymer 1161, and second scattering particles 1163. may include
  • the second quantum dots 1162 may be excited by the blue light Lb and isotropically emit green light Lg having a longer wavelength than the blue light.
  • the second photosensitive polymer 1161 may be an organic material having light transmission.
  • the second scattering particles 1163 scatter blue light Lb that is not absorbed by the second quantum dots 1162 so that more second quantum dots 1162 are excited, thereby increasing color conversion efficiency.
  • the second scattering particles 1163 may be, for example, titanium oxide (TiO2) or metal particles.
  • the second quantum dots 1162 may be selected from a group II-VI compound, a group III-V compound, a group IV-VI compound, a group IV element, a group IV compound, and a combination thereof.
  • the first quantum dot 1152 and the second quantum dot 1162 may be made of the same material. In this case, the sizes of the first quantum dots 1152 may be larger than those of the second quantum dots 1162 .
  • the transmission part 530 may transmit the blue light Lb without converting the blue light Lb incident to the transmission part 530 .
  • the transmission part 530 may include a third photosensitive polymer 1171 in which third scattering particles 1173 are dispersed.
  • the third photosensitive polymer 1171 may be, for example, an organic material having light transmission such as a silicone resin or an epoxy resin, and may be the same material as the first and second photosensitive polymers 1151 and 1161 .
  • the third scattering particles 1173 may scatter and emit the blue light Lb, and may be made of the same material as the first and second scattering particles 1153 and 1163.
  • FIG. 4 is an equivalent circuit diagram illustrating a light emitting diode included in a display device according to an exemplary embodiment and a pixel circuit electrically connected to the light emitting diode.
  • the pixel circuit PC shown in FIG. 4 corresponds to each of the first to third pixel circuits PC1 , PC2 , and PC3 previously described with reference to FIG. 2 , and the light emitting diode (LED) shown in FIG. It may correspond to the first to third light emitting diodes LED1 , LED2 , and LED3 described with reference to each other.
  • a light emitting diode for example, a first electrode (eg, anode) of the light emitting diode (LED) is connected to the pixel circuit (PC), and a second electrode (eg, cathode) of the light emitting diode (LED) has a common It may be connected to the auxiliary wire 240 providing the voltage ELVSS.
  • the light emitting diode (LED) may emit light with a luminance corresponding to the amount of current supplied from the pixel circuit (PC).
  • the light emitting diode (LED) of FIG. 4 corresponds to each of the first to third light emitting diodes (LED1, LED2, LED3) shown in FIG. 2, respectively, and the pixel circuit (PC) of FIG. It may correspond to each of the first to third pixel circuits PC1 , PC2 , and PC3 .
  • the pixel circuit PC may control the amount of current flowing from the driving voltage ELVDD to the common voltage ELVSS via the light emitting diode LED in response to the data signal.
  • the pixel circuit PC may include a first transistor M1 , a second transistor M2 , a third transistor M3 , and a storage capacitor Cst.
  • Each of the first transistor M1, second transistor M2, and third transistor M3 may be an oxide semiconductor transistor including a semiconductor layer made of an oxide semiconductor or a silicon semiconductor transistor including a semiconductor layer made of polysilicon.
  • the first electrode may be one of the source electrode and the drain electrode
  • the second electrode may be the other one of the source electrode and the drain electrode.
  • the first transistor M1 may be a driving transistor.
  • a first electrode of the first transistor M1 may be connected to the driving voltage line 250 supplying the driving voltage ELVDD, and a second electrode may be connected to the first electrode of the light emitting diode (LED).
  • a gate electrode of the first transistor M1 may be connected to the first node N1.
  • the first transistor M1 may control the amount of current flowing through the light emitting diode LED from the driving voltage ELVDD in response to the voltage of the first node N1.
  • the second transistor M2 may be a switching transistor.
  • a first electrode of the second transistor M2 may be connected to the data line DL, and a second electrode may be connected to the first node N1.
  • a gate electrode of the second transistor M2 may be connected to the scan line SL.
  • the second transistor M2 is turned on when a scan signal is supplied to the scan line SL to electrically connect the data line DL and the first node N1.
  • the third transistor M3 may be an initialization transistor and/or a sensing transistor.
  • the first electrode of the third transistor M3 may be connected to the second node N2 and the second electrode may be connected to the sensing line SEL.
  • a gate electrode of the third transistor M3 may be connected to the control line CL.
  • the storage capacitor Cst may be connected between the first node N1 and the second node N2.
  • the first capacitor electrode of the storage capacitor Cst may be connected to the gate electrode of the first transistor M1
  • the second capacitor electrode of the storage capacitor Cst may be connected to the first electrode of the light emitting diode (LED). .
  • the present invention is not limited thereto.
  • at least one of the first transistor M1 , the second transistor M2 , and the third transistor M3 may be formed of a P-type MOSFET.
  • the second transistor M2 and/or the third transistor M3 may be a P-type MOSFET.
  • the pixel circuit PC may include four or more transistors.
  • 5A is a plan view illustrating a common voltage supply line and a driving voltage supply line of a display device according to an exemplary embodiment of the present invention.
  • the display device DV includes a common voltage supply line 10 for supplying the common voltage ELVSS to the pixel circuit described above with reference to FIG. 4 and a driving voltage ELVDD to the second electrode of the light emitting diode. It may include a driving voltage supply line 20 for supplying.
  • the common voltage supply line 10 and the driving voltage supply line 20 may be disposed in the non-display area NDA.
  • the shape of the display device DV may be substantially the same as that of the substrate 100 .
  • the substrate 100 includes a display area DA and a non-display area NDA around (eg, outside) the display area DA.
  • the substrate 100 It will be described as including the display area DA and the non-display area NDA around (eg, outside) the display area DA.
  • the common voltage supply line 10 may include a first common voltage supply part 11 and a second common voltage supply part 12 disposed adjacent to the first edge E1 of the display area DA.
  • the first common voltage supplying part 11 and the second common voltage supplying part 12 are spaced apart from each other along the x-direction and disposed adjacent to the second to fourth edges E2, E3, and E4 of the display area DA. It may be integrally connected through the first and third extension parts 13, 14 and 15.
  • At least one third common voltage supplying unit 16 may be disposed between the first common voltage supplying unit 11 and the second common voltage supplying unit 12.
  • FIG. 5A shows four third common voltage supplying units. (16) is shown.
  • the common voltage supply line 10 may be electrically connected to auxiliary wires 240 passing through the display area DA.
  • Each of the auxiliary wires 240 may extend along the y direction, as shown in FIG. 5A .
  • At least one auxiliary wire 240 extends along the y-direction to cross the display area DA and has a first common voltage supply unit 11 and a second extension unit facing the first common voltage supply unit 11 ( 14) can be electrically connected to a part.
  • At least one other auxiliary line 240 extends across the display area DA along the y-direction and is a second extension portion facing the second common voltage supply unit 12 and the second common voltage supply unit 12. It can be electrically connected to part of (14).
  • another at least one auxiliary wire 240 extends to cross the display area DA along the y-direction and has a third common voltage supply unit 16 and a third common voltage supply unit 16 facing each other. 2 may be electrically connected to a part of the extension part 14.
  • the common voltage supply line 10 includes the third common voltage supply part 16 disposed between the first common voltage supply part 11 and the second common voltage supply part 12, the first common voltage supply part 11 and When a current supplied through the common voltage supply line 10 is applied, the current density can be lowered and heat generation can be suppressed compared to the case where only the second common voltage supply unit 12 is provided.
  • the driving voltage supply line 20 is located in the non-display area NDA, but the driving voltage supply unit 21 adjacent to the first edge E1 of the display area DA and the third edge E3 of the display area DA It may include a counterpart (22) extended along.
  • the driving voltage supply unit 21 and the counterpart 22 may be disposed on both sides of the display area DA with the display area DA interposed therebetween.
  • the driving voltage supply line 20 may be electrically connected to the driving voltage lines 250 crossing the display area DA. Each of the driving voltage lines 250 may extend along the y direction while being electrically connected to the driving voltage supply unit 21 . In some embodiments, the driving voltage lines 250 may be electrically connected to horizontal driving voltage lines 270 extending along the x direction to cross the driving voltage lines 250 . The driving voltage line 250 and the horizontal driving voltage line 270 are disposed on different layers and may be electrically connected through a contact hole penetrating at least one insulating layer interposed therebetween.
  • FIGS. 5B and 5C are plan views illustrating a common voltage supply line of a display device according to another exemplary embodiment of the present invention.
  • the display device DV shown in FIGS. 5B and 5C includes a driving voltage line 250 ( FIG. 5A ) and a horizontal driving voltage line 270 ( FIG. 5A ) electrically connected to the driving voltage supply line 20 as described above with reference to FIG. 5A . ), but for convenience of description, the driving voltage line 250 (FIG. 5A) and the horizontal driving voltage line 270 (FIG. 5A) are omitted in FIGS. 5B and 5C.
  • the display device DV includes an auxiliary line 240' (hereinafter referred to as a first auxiliary line) crossing the display area DA along the y-direction and a horizontal line across the display area DA along the x-direction.
  • the first auxiliary wire 240' and the second auxiliary wire 240" crossing each other are disposed on different layers, and these They may be electrically connected through a through hole formed in at least one insulating layer interposed therebetween.
  • the first common voltage supplying part 11 and the second common voltage supplying part 12 of the common voltage supply line 10 are integrally connected through the first and third extension parts 13, 14 and 15. Although shown connected, the present invention is not limited thereto.
  • the common voltage supply line 10 includes a first common voltage supply unit 11 and a second common voltage supply unit disposed adjacent to the first edge E1 of the display area DA. (12), and an extension portion 14' disposed adjacent to the third edge E3 of the display area DA.
  • the extension part 14' may be physically separated from the first common voltage supplying part 11 and the second common voltage supplying part 12.
  • each of the auxiliary wires 240 may be electrically connected to the first to third common voltage supply units 11, 12, and 16, and the other end may be connected to the extension part 14'.
  • the first extension 13 and the third extension 15 may be omitted.
  • a part of the non-display area NDA eg, the second edge E2 and the fourth edge E4 of the display area DA
  • a portion of the adjacent non-display area NDA may be reduced.
  • FIG. 6 is a cross-sectional view showing a portion of a display device according to an exemplary embodiment
  • FIG. 7 is an enlarged cross-sectional view of portion VI of FIG. 6, and
  • FIGS. A cross-sectional view of the wiring.
  • auxiliary wires 240, 240', and 240" previously described with reference to FIGS. 5A to 5C may be electrically connected to the second electrode of the light emitting diode in the display area DA.
  • the auxiliary wire 240 shown in FIG. 5A or 5C is electrically connected to the second electrode of the light emitting diode (LED)
  • the first auxiliary wire described with reference to FIG. 5B 240' and/or the second auxiliary wire 240" may also be electrically connected to the second electrode of the LED.
  • the auxiliary wire 240 shown in FIG. 6 may be the first auxiliary wire 240' and/or the second auxiliary wire 240' described with reference to FIG. 5B.
  • FIG. 6 shows a first light emitting diode (LED1) among a plurality of light emitting diodes disposed in the display device, but the second and third light emitting diodes (LED2, LED3, FIG. 2) described above with reference to FIG. 2 are also shown. It has the same structure as the first light emitting diode of Fig. 6.
  • a first light emitting diode LED1 is disposed on a substrate 100 .
  • a first pixel circuit PC1 electrically connected to the first light emitting diode LED1 is disposed between the substrate 100 and the first light emitting diode LED1.
  • the first pixel circuit PC1 may include a plurality of transistors and a storage capacitor.
  • FIG. 6 shows the first transistor M1.
  • the substrate 100 may include a glass material or a polymer resin, and the substrate 100 including the polymer resin may have flexibility.
  • a display device having a flexible substrate 100 may have a shape such as being curved, bendable, rollable, or foldable. can be changed.
  • the buffer layer 101 is disposed on the substrate 100 and can prevent impurities from penetrating from the substrate 100 toward the transistor, for example, the first transistor M1.
  • the buffer layer 101 may include an inorganic insulator such as silicon oxide, silicon nitride, and/or silicon oxynitride.
  • the driving semiconductor layer 210 of the first transistor M1 is disposed on the buffer layer 101 .
  • the driving semiconductor layer 210 may include an oxide semiconductor.
  • the oxide semiconductor may include indium gallium zinc oxide (IGZO), zinc tin oxide (ZTO), indium zinc oxide (IZO), and the like.
  • the driving semiconductor layer 210 may include polysilicon, amorphous silicon, or an organic semiconductor.
  • the driving semiconductor layer 210 includes a channel region 211 overlapping the driving gate electrode 220, a first region 212 disposed on both sides of the channel region 211 and doped with impurities or conductive, and a second region ( 213) may be included.
  • One of the first region 212 and the second region 213 may correspond to a source region and the other may correspond to a drain region.
  • the driving gate electrode 220 may overlap the channel region 211 of the semiconductor layer 210 with the gate insulating layer 103 therebetween.
  • the driving gate electrode 220 may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), and the like, and may be formed as a multilayer or single layer including the above materials. can be formed
  • the gate insulating layer 103 may include an inorganic insulating material such as silicon oxide, silicon nitride, and/or silicon oxynitride.
  • the electrode 230 is disposed on the interlayer insulating layer 105 and may be connected to any one of the first region 212 and the second region 213 of the semiconductor layer 210 .
  • FIG. 6 shows that the electrode 230 is connected to the second region 213 .
  • the electrode 230 may correspond to a source (or drain) electrode.
  • the interlayer insulating layer 105 may include an inorganic insulating material such as silicon oxide, silicon nitride, and/or silicon oxynitride.
  • the driving voltage line 250 may be disposed on the interlayer insulating layer 105 and may be formed together in the same process.
  • the electrode 230 and the driving voltage line 250 may be formed of a plurality of sub-layers.
  • the electrode 230 may include a first layer 231 , a second layer 232 under the first layer 231 , and a third layer 233 under the second layer 232 .
  • the driving voltage line 250 may include a first layer 251 , a second layer 252 under the first layer 251 , and a third layer 253 under the second layer 252 . there is.
  • the auxiliary line 240 disposed in the display area DA may be disposed adjacent to the first pixel circuit PC1.
  • the auxiliary wire 240 may be disposed on the same layer as the electrode 230 and/or the driving voltage line 250 .
  • FIG. 6 shows that the auxiliary wiring 240 is disposed on the interlayer insulating layer 105 .
  • the auxiliary wire 240 may have a stacked structure of a plurality of conductive layers.
  • the auxiliary wiring 240 may include a main sub layer 242 , an upper layer 241 on the main sub layer 242 , and a lower layer 243 under the main sub layer 242 .
  • the main sub-layer 242 may be a sub-layer occupying most of the auxiliary wiring 240 . That the main sub layer 242 occupies most of the auxiliary wiring 240 may indicate that the thickness t2 of the main sub layer 242 is about 50% or more of the total thickness Tp of the auxiliary wiring 240. there is. In some embodiments, the thickness t2 of the main sub layer 242 may be about 60% or more or about 70% or more of the total thickness Tp of the auxiliary wire 240 . The thickness t2 of the main sub layer 242 may be greater than the respective thicknesses of the upper layer 241 and the lower layer 243 . As an example, the main sub layer 242 may have a thickness of about 1000 ⁇ to about 15000 ⁇ .
  • the main sub layer 242 is made of copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel ( Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), and/or molybdenum (Mo).
  • the main sub-layer 242 may have a single layer or multi-layer structure including the above materials.
  • the main sub layer 242 may be a single layer including copper (Cu) or a single layer including aluminum (Al).
  • the lower layer 243 may include a material different from that of the main sub layer 242 .
  • the lower layer 243 may be selected in consideration of conductivity and adhesiveness.
  • the lower layer 243 is a metal layer including a metal such as titanium (Ti), or a transparent conductive oxide such as gallium zinc oxide (GZO) and/or indium zinc oxide (IZO). It may include TCO and Transparent Conductive Oxide, and the above-mentioned transparent conductive oxide may be amorphous or crystalline.
  • the upper layer 241 is disposed on the main sub layer 242 and may include a material different from that of the main sub layer 242 .
  • the upper layer 241 may prevent the main sub layer 242 from being damaged during the manufacturing process of the display device.
  • the upper layer 241 may include a transparent conductive oxide (TCO) such as indium tin oxide (ITO).
  • TCO transparent conductive oxide
  • ITO indium tin oxide
  • the upper layer 241 may include a metal such as titanium (Ti), molybdenum (Mo), and/or tungsten (W).
  • the upper layer 241 may have a multilayer structure of the aforementioned metal layer and the transparent conductive oxide layer.
  • the electrode 230 and the driving voltage line 250 disposed on the same layer as the auxiliary wire 240 may also include the same material as the auxiliary wire 240 .
  • the first layer 231, the second layer 232, and the third layer 233 of the electrode 230 are the upper layer 241, the main sub layer 242, and the auxiliary wiring 240, respectively. It may include the same material as the lower layer 243 .
  • the first layer 251, the second layer 252, and the third layer 253 of the driving voltage line 250 are the upper layer 241, the main sub layer 242, And it may include the same material as the lower layer 243 .
  • the planarization insulating layer 107 may be disposed on the electrode 230 , the auxiliary wire 240 , and the driving voltage line 250 .
  • the planarization insulating layer 107 may include an organic insulating material such as acrylic, benzocyclobutene (BCB), polyimide, and/or hexamethyldisiloxane (HMDSO).
  • the planarization insulating layer 107 includes a first opening 107OP overlapping the auxiliary wire 240 .
  • the first width W1 of the first opening 107OP is greater than the second width W2 of the auxiliary line 240, and thus the insulating layer below it through the first opening 107OP, for example, the interlayer insulating layer 105 ) may be exposed.
  • the first electrode 310 on the planarization insulating layer 107 may be electrically connected to the first pixel circuit PC1 through the contact hole 107CNT.
  • the first electrode 310 may be connected to the electrode 230 through the contact hole 107CNT.
  • the first electrode 310 may include a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), indium gallium oxide (IGO), or aluminum zinc oxide (AZO). may contain oxides.
  • the first electrode 310 may include silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), or neodymium (Nd). ), iridium (Ir), chromium (Cr), or a reflective film including a compound thereof.
  • the first electrode 310 may further include a film formed of ITO, IZO, ZnO, or In2O3 above/below the reflective film.
  • the first electrode 310 may have a three-layer structure in which an ITO layer, a silver (Ag) layer, and an ITO layer are stacked.
  • the bank layer 111 is disposed on the first electrode 310 and may cover an edge of the first electrode 310 .
  • the bank layer 111 includes an opening (hereinafter referred to as a light emitting opening, 111EOP) overlapping a portion of the first electrode 310 .
  • the light emitting opening 111EOP may expose a central portion of the first electrode 310 .
  • the bank layer 111 may include an organic material.
  • the bank layer 111 may include a second opening 111OP overlapping the first opening 107OP of the planarization insulating layer 107 .
  • the third width W3 of the second opening 111OP may be greater than the first width W1 of the first opening 107OP.
  • the intermediate layer 320 may contact the first electrode 310 through the light emitting opening 111EOP.
  • the intermediate layer 320 includes the light emitting layer 322 as shown in FIG. 7 , and may include a functional layer positioned below and/or above the light emitting layer 322 .
  • FIG. 7 shows that the intermediate layer 320 includes a first functional layer 321 disposed below the light emitting layer 322 and a second functional layer 323 disposed above the light emitting layer 322. .
  • the first functional layer 321 may have a single layer or multiple layers.
  • the first functional layer 321 may include a hole injection layer (HIL) and/or a hole transport layer (HTL).
  • the light emitting layer 322 may include a polymer or a low molecular weight organic material that emits light of a predetermined color.
  • the second functional layer 323 may include an electron transport layer (ETL) and/or an electron injection layer (EIL).
  • the second electrode 330 may be made of a conductive material having a low work function.
  • the second electrode 330 is silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or a (semi)transparent layer containing alloys thereof.
  • the second electrode 330 may further include a layer such as ITO, IZO, ZnO, or In2O3 on the (semi)transparent layer containing the above-described material.
  • the intermediate layer 320 and the second electrode 330 may be deposited using a mask having an opening corresponding to the display area DA. Accordingly, the intermediate layer 320 may have an area corresponding to the entire area of the display area DA, and may be disconnected or separated around the auxiliary wiring 240 depending on the shape of the auxiliary wiring 240 . Similarly, the second electrode 330 may have an area corresponding to the entire area of the display area DA, and may be disconnected or separated around the auxiliary wire 240 depending on the shape of the auxiliary wire 240 . Parts of the second electrode 330 located on both sides of the auxiliary wire 240 may contact side surfaces of the auxiliary wire 240 . Similarly, portions of the intermediate layer 320 located on both sides of the auxiliary wire 240 may also contact the side surface of the auxiliary wire 240 .
  • the auxiliary wiring 240 may be formed so that the width of the upper layer 241 on the main sub layer 242 is greater than the width of the upper surface of the main sub layer 242 .
  • the upper layer 241 may include a pair of tips T protruding from the point where the side surface 242s and the top surface 242t of the main sub layer 242 meet.
  • Such a structure may be formed by etching a portion of the auxiliary wire 240 exposed through the first opening 107OP (eg, etching using an etchant in the process of forming the first electrode 310).
  • the material of the main sub layer 242 may include a material having a different etching selectivity from that of the upper layer 241 .
  • the material of the lower layer 243 may include a material having a different etching selectivity from that of the main sub-layer 242 .
  • the lower layer 243 may include the same material as the upper layer 241 . there is. As the main sub layer 242 is overetched more than the upper layer 241 by the etchant used in the etching process, a structure having a pair of tips T may be formed as shown in FIG. 7 .
  • the deposition material may proceed in a direction (z direction) perpendicular to the substrate 100 and in a direction oblique thereto. Accordingly, portions of the middle layer 320 located on both sides of the auxiliary wire 240 may directly contact the side surface 242s of the main sub layer 242, and the second electrodes located on both sides of the auxiliary wire 240. Portions of 330 may form a contact region CCR while directly contacting the side surface 242s of the main sub layer 242 .
  • One part 320R of the middle layer 320 and one part 330R of the second electrode 330 are located on the upper surface 240t of the auxiliary wire 240, respectively, while other parts of the middle layer 320 and the second It may be separated from other parts of the electrode 330 .
  • the intermediate layer 320 includes the first functional layer 331, the light emitting layer 332, and the second functional layer 333, as shown in FIG. 7, the first functional layer 331 ), the light emitting layer 332, and the second functional layer 333 are each disconnected around the auxiliary wire 240 and disposed on both sides of the auxiliary wire 240, and the upper surface 240t of the auxiliary wire 240 It may include parts (331R, 332R, 333R) located in.
  • the inclination angle ⁇ of the side surface 242s of the main sub layer 242 may be equal to or greater than about 20 degrees and less than about 90 degrees. 6 and 7 show that the side surface 242s of the main sub layer 242 has a forward tapered shape, but the present invention is not limited thereto.
  • the inclination angle ⁇ of the side surface 242s of the main sub layer 242 may be about 90°.
  • the inclination angle ⁇ of the side surface 242s of the main sub layer 242 may be greater than about 90° and equal to or less than about 135°.
  • a light emitting diode including a multilayer structure of the first electrode 310, the intermediate layer 320, and the second electrode 330, for example, the first light emitting diode LED1 is covered with the encapsulation layer 400.
  • the encapsulation layer 400 may include at least one inorganic encapsulation layer and at least one organic encapsulation layer.
  • the encapsulation layer 400 may include a first inorganic encapsulation layer 410, an organic encapsulation layer 420, and a second inorganic encapsulation layer 430 sequentially stacked.
  • Each of the first and second inorganic encapsulation layers 410 and 430 may include one or more inorganic insulators.
  • the inorganic insulator may include aluminum oxide, tantalum oxide, hafnium oxide, zinc oxide, silicon oxide, silicon nitride, or/and silicon oxynitride.
  • the first and second inorganic encapsulation layers 410 and 430 may be formed through chemical vapor deposition. Since the first inorganic encapsulation layer 410 has a relatively excellent step coverage, it can entirely cover the auxiliary wire 240 despite the fact that the auxiliary wire 240 has a tip T shape (see FIG. 7 ).
  • the first inorganic encapsulation layer 410 includes portions of the middle layer 320 and the second electrode 330 disposed on both sides of the auxiliary wire 240, a portion of the side surface 242s of the main sub layer 242, It may continuously extend to cover the bottom and side surfaces of the upper layer 245, a portion 230R of the middle layer 320 on the auxiliary wire 240, and a portion 330R of the second electrode 330.
  • the organic encapsulation layer 420 may include a polymer-based material.
  • Polymer-based materials may include acrylic resins, epoxy resins, polyimide, and polyethylene.
  • Acrylic resins may include, for example, polymethyl methacrylate, polyacrylic acid, and the like.
  • a color conversion-transmission layer 500 and a color layer 600 may be disposed on the encapsulation layer 400 .
  • FIG. 6 shows that the first color conversion unit 510 of the color conversion-transmitting layer 500 is disposed to overlap the first light emitting diode LED1, and the first color filter 610 of the color layer 600 ) is disposed to overlap the first light emitting diode LED1.
  • the first color conversion unit 510 and the first color filter 610 may be surrounded by light blocking units 540 and 640, respectively.
  • FIG. 6 illustrates the first color conversion unit 510 and the first color filter 610.
  • the light-blocking parts 540 and 640 disposed on both sides of each filter 610 are shown.
  • the light blocking parts 540 and 640 may include a light blocking material such as a black matrix, and the auxiliary wire 240 may overlap the light blocking parts 540 and 640 .
  • FIG. 9A is a perspective view schematically illustrating an auxiliary wire and a first opening of a planarization insulating layer on the auxiliary wire according to an embodiment of the present invention
  • FIG. 9B is a plan view schematically illustrating FIG. 9A.
  • the first width W1 of the first opening 107OP of the planarization insulating layer 107 is the second part of the auxiliary wire 240 overlapping the first opening 107OP. It may be formed larger than the width W2.
  • a portion of the auxiliary wiring 240 overlapping the material portion of the planarization insulating layer 107 may be formed with the upper layer 241 , the main sub layer 242 , and the lower layer 243 having relatively the same width.
  • the cross-sectional shapes of the upper layer 241, the main sub layer 242, and the lower layer 243 are It may have a structure as described above with reference to FIGS. 6 and 7 (or FIGS. 8a and 8b).
  • the size or area of the main sub layer 242 overlapping the first opening 107OP may be smaller than that of the upper layer 241 .
  • the solid line represents the outline (corresponding to the side surface on the cross section) of the upper layer 241 and/or the lower layer 243 on a plane
  • the dotted line represents the outline of the main sub layer 242 on a plane ( corresponding to the side on the cross-section).
  • the width of the upper layer 241 and/or the lower layer 243 corresponds to the second width W2
  • the width W22 of the main sub layer 242 corresponds to the upper layer 241 and/or the lower layer 243. It may be smaller than the width (eg, the second width W2 ) of the lower layer 243 .
  • the dotted line portion overlapping the first opening 107OP corresponds to the contact area (CCR, FIG. 7 ) formed by direct contact between the auxiliary wire 240 and the second electrode 330 described above with reference to FIG. 7 . .
  • the auxiliary wire 240 includes a protrusion protruding in a direction (x direction) crossing the extending direction (y direction) of the auxiliary wire 240. can do.
  • FIG. 10A is a perspective view schematically showing a first opening of an auxiliary wire and a planarization insulating layer on the auxiliary wire according to another embodiment of the present invention
  • FIG. 10B is a perspective view of an auxiliary wire and a planarization insulating layer according to another embodiment of the present invention
  • 10C is a plan view showing one opening
  • FIG. 10C is a plan view showing the first opening of the auxiliary wiring and the planarization insulating layer according to another embodiment of the present invention.
  • the auxiliary wire 240 may include a protrusion 240P protruding in a direction (x direction) crossing the extension direction (y direction) of the auxiliary wire 240 .
  • one protrusion 240P may be disposed on both sides of the auxiliary wire 240 .
  • 10A and 10B show that the auxiliary wire 240 includes a pair of protrusions 240P, but in another embodiment, the auxiliary wire 240 has a plurality of pairs of protrusions (as shown in FIG. 10C). 240P) may be included.
  • auxiliary wire 240 includes the protruding portion 240P
  • the upper layer 241, the main sub layer 242, and the lower layer 243 included in the auxiliary wire 240 also include the protruding portion 241P, 242P, and 243P, respectively.
  • the protrusions 240P of the auxiliary wire 240 overlap the first opening 107OP of the planarization insulating layer 107, and the first width W1 of the first opening 107OP overlaps the first opening 107OP. may be formed larger than the second width W2' of a portion of the auxiliary wire 240 to be formed.
  • the second width W2' may correspond to the maximum width of a portion of the auxiliary wire 240 overlapping the first opening 107OP.
  • the protrusions 240P are disposed on both sides of the auxiliary wire 240, it may correspond to the distance from the end of one protrusion 240P to the end of the other protrusion 240P.
  • the second width W2' may be greater than the second width W2 of a portion of the auxiliary wire 240 that does not overlap the first opening 107OP.
  • the cross-sectional shapes of the upper layer 241, the main sub layer 242, and the lower layer 243 are as described above. 6 and 7 (or FIGS. 8a and 8b) may have a structure as described above.
  • the solid lines represent the outlines (corresponding to the side surfaces of the cross section) of the upper layer 241 and/or the lower layer 243 on a plane
  • the dotted lines represent the outlines of the main sub layer 242 on a plane. Indicates the outline (corresponding to the side on the cross section). As shown in FIGS.
  • the width of the upper layer 241 and/or the lower layer 243 corresponds to the second width W2'
  • the width W22' of the main sub layer 242 corresponds to the upper layer ( 241) and/or the width of the lower layer 243 (eg, the second width, W2').
  • the dotted line portion overlapping the first opening 107OP is a contact area (CCR, FIG. 7 ) formed by direct contact between the auxiliary wire 240 and the second electrode 330 described above with reference to FIG. 7 .
  • the contact area between the second electrode 330 and the side surface of the auxiliary wire 240 is at least one of the protrusions 240P of the auxiliary wire 240. It may be continuous along the side.
  • the contact area between the auxiliary wire 240 and the second electrode 330 for example, the contact area CCR, may increase.
  • FIG. 11A is a perspective view schematically illustrating a first opening of an auxiliary wire and a planarization insulating layer on the auxiliary wire according to another embodiment of the present invention
  • FIG. 11B is a perspective view of an auxiliary wire and a planarization insulating layer according to another embodiment of the present invention. It is a plan view showing one opening.
  • the auxiliary wire 240 may include a recessed portion 240D that is recessed in a direction (x direction) crossing the extending direction (y direction) of the auxiliary wire 240 .
  • one depression 240D may be disposed on both sides of the auxiliary wire 240 .
  • 11A and 11B show that the auxiliary wire 240 includes a pair of recessed parts 240D, but in another embodiment, the auxiliary wire 240 may include a plurality of pairs of recessed parts.
  • auxiliary wire 240 includes the recessed portion 240D, the upper layer 241, the main sub layer 242, and the lower layer 243 included in the auxiliary wire 240 also have the recessed portion 241D, 242D, 243D) may be included.
  • the recessed portions 240D of the auxiliary wire 240 overlap the first opening 107OP of the planarization insulating layer 107, and the first width W1 of the first opening 107OP extends to the first opening 107OP. It may be formed larger than the second width W2 ′′ of a portion of the overlapping auxiliary wire 240 .
  • the second width W2 ′′ may correspond to a minimum width of a portion of the auxiliary wire 240 overlapping the first opening 107OP.
  • the recessed parts 240D are disposed on both sides of the auxiliary wire 240, it may correspond to the distance from the end of one recessed part 240D to the end of the other recessed part 240D.
  • the second width W2 ′′ may be smaller than the second width W2 of a portion of the auxiliary wire 240 that does not overlap the first opening 107OP.
  • the width of the upper layer 241 and/or the lower layer 243 corresponds to the second width W2′′, and the width W22′′ of the main sub layer 242 corresponds to the upper layer 241 ) and/or may be smaller than the width (eg, the second width, W2′′) of the lower layer 243 .
  • a dotted line portion overlapping the first opening 107OP corresponds to the contact area CCR. That is, the contact area between the second electrode 330 and the side surface of the auxiliary wire 240 (eg, the side surface of the main sub layer 242) is at least one of the depressions 240D of the auxiliary wire 240. It may be continuous along the side. As shown in FIG. 11B , when the auxiliary wire 240 includes the depressions 240D, the contact area between the auxiliary wire 240 and the second electrode 330, for example, the contact area CCR, may increase. .
  • 11A and 11B show that the width of the main sub layer 242 is smaller than that of the upper layer 241 and/or the lower layer 243, but in another embodiment, the auxiliary wire 240 is recessed.
  • the second width W2 ′′ of the portion overlapping the first opening 107OP, including the portion 240D becomes very narrow, process conditions may be modified.
  • the upper layer 241, the main sub layer 242, and the lower layer 243 may have relatively the same width. In other words, the size or area of the main sub layer 242 overlapping the first opening 107OP may be formed to be relatively the same as that of the upper layer 241 .

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

Un mode de réalisation de la présente invention concerne un dispositif d'affichage comprenant : une ligne auxiliaire sur un substrat ; une couche isolante qui est disposée sur la ligne auxiliaire et comprend une première ouverture chevauchant la ligne auxiliaire et ayant une largeur supérieure à la largeur de la ligne auxiliaire ; une première électrode sur la couche isolante ; une couche de banque qui comprend une ouverture d'émission de lumière chevauchant la première électrode ; une couche intermédiaire qui chevauche la première électrode à travers l'ouverture d'émission de lumière et comprend une couche d'émission de lumière ; et une seconde électrode sur la couche intermédiaire, la ligne auxiliaire comprenant une pluralité de sous-couches, et la seconde électrode étant en contact avec la surface latérale de l'une de la pluralité de sous-couches à travers la première ouverture de la couche isolante.
PCT/KR2022/011849 2021-09-16 2022-08-09 Dispositif d'affichage WO2023043062A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130005854A (ko) * 2011-07-07 2013-01-16 엘지디스플레이 주식회사 유기전계 발광소자용 기판 및 그 제조 방법
KR20130071543A (ko) * 2011-12-21 2013-07-01 엘지디스플레이 주식회사 유기발광소자
KR20170063326A (ko) * 2015-11-30 2017-06-08 엘지디스플레이 주식회사 유기 발광 표시 장치
KR20190042395A (ko) * 2017-10-16 2019-04-24 엘지디스플레이 주식회사 대면적 유기발광 다이오드 표시장치
KR20200143622A (ko) * 2019-06-14 2020-12-24 삼성디스플레이 주식회사 디스플레이 장치 및 그 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130005854A (ko) * 2011-07-07 2013-01-16 엘지디스플레이 주식회사 유기전계 발광소자용 기판 및 그 제조 방법
KR20130071543A (ko) * 2011-12-21 2013-07-01 엘지디스플레이 주식회사 유기발광소자
KR20170063326A (ko) * 2015-11-30 2017-06-08 엘지디스플레이 주식회사 유기 발광 표시 장치
KR20190042395A (ko) * 2017-10-16 2019-04-24 엘지디스플레이 주식회사 대면적 유기발광 다이오드 표시장치
KR20200143622A (ko) * 2019-06-14 2020-12-24 삼성디스플레이 주식회사 디스플레이 장치 및 그 제조방법

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